Neiers -- who was released in July -- is still on probation for burglarizing Orlando Bloom's L.A. home last year ... so this new arrest could lead to some serious time behind bars.

Calls to Neiers' reps have not been returned.

UPDATE: Law enforcement sources tell TMZ, Neiers was also found with a fake Florida driver's license. All in all, she was booked on two counts -- possession of a controlled substance and perjury (for the fake ID).